<div class="rte-toolbar__select" ref="root">
  <div class="rte-toolbar__select-box">
    <div class="rte-toolbar__select-box--selected" ref="currBtn" @mousedown="hidebar" @mouseup="commandCurrent">
      <span class="rtei" ref="currIcon"></span>
    </div>
    <div class="rte-toolbar__select-box--unfold" @mousedown="hidebar" @mouseup="openList">
      <span class="rtei rtei-arrow-down-filling"></span>
    </div>
  </div>
  <ul class="rte-toolbar__select-options" ref="optionRoot" style="display: none"></ul>
</div>
